Crucible Year Peter Yuill
Archive · full record

T_281

The work as shown. Every value below comes from vae.db, the master database of the Crucible Year.

Recorded

Date
2026.05.07, day 130
Size
97 × 180 cm
Paper
S12, Red Star Mo She Special Effect Xieyi, half-raw
Inks
MB4, MB5, MB6
Phase
P2 The Switch
Shown on the site
yes (V23 rating of 5.0 or higher)
Early storage triage
SA: save, archive (Peter's early system, since retired)

Measured · V23 (v23.8)

V23 rating
6.2
Form
2.4
Tonal depth
2
Layering
3
Composition
2
Material and surface
1
Ink cover
74%
Dark share
15%
Tonal steps
4
Flaws named by the reads
tide line 1, other 10, water stain 4, bloom 2
The V23 rating runs from 1 to 9, with 5 the middle of this body of work. It is the engine's reading, and the reference the archive is measured against.

Older engine

V7
4
From an earlier engine (V7). Its scale differs from V23's, so it is only ever compared with other readings by the same engine.

How the number was made

Read by the Visual Analysis Engine, version 23.8, on 2026.10.06: measured by code, then read 5 times by Claude Opus 5.5 against three reference paintings (R1 to R3), each read independent of the others. How the engine works.

WHAT THE CODE SEES

Three views of one sheet.

Left, the photograph. Centre, the tone stretch the model is shown beside it: the darkest 45% of tones spread over the whole range, so flat black, banding and stains show. Right, every pixel as the measuring code classes it: cyan black ink, deep teal translucent grey, stone the palest ink, near black bare paper.

T_281T_281, tone-stretchedT_281, classed by brightness
74%of the sheet carries ink
Black 15%Grey 75%Light 9% SHARE OF THE INK, NOT OF THE SHEET
TONAL STEPS

4 families of tone.

Every inked pixel's brightness in 64 bins, smoothed; each circled peak holds at least 4% of the ink. Life inside the black: 0.044 (under 0.045 reads as flat).

0.300.751234 BLACK INK TRANSLUCENT GREYS PALEST INK, 0.88 LUMINANCE OF EVERY INKED PIXEL, 64 BINS. PAPER (ABOVE 0.88) IS LEFT OUT.
FIVE READS

Five reads, agreeing on 4 of 5 qualities.

Each quality placed on its ladder by each read, and the mean the engine keeps. Where reads differ, they differ by one rung; close calls resolve down.

READ 1READ 2READ 3READ 4READ 5MEAN
Form3FLUENT2BUILT2BUILT2BUILT3FLUENT2.4
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering3ORDERED3ORDERED3ORDERED3ORDERED3ORDERED3.0
Composition2WORKING2WORKING2WORKING2WORKING2WORKING2.0
Material and surface1FLAWED1FLAWED1FLAWED1FLAWED1FLAWED1.0

READ 1, IN ITS OWN WORDS

“A fluent spiral of nested translucent arcs closing on a dry-brush black core, similar in type to R3. It is let down by a flat black interior and the hard-edged runs and drips at bottom-left.”

Form · FLUENT

All principal arcs follow the brush's circular travel; black core and grey bands are fluent. The squared terminal of the dark arc at centre is slightly blocky.

WEAKEST Squared blunt end of the black core arc

STRONGEST Dry-brush black arc sweeping round the right

Tonal depth · MODELLED

Grey bands and dry-brush right arc are modelled with streaks and grain. The black core near centre is flat inside; dark interior modulation 0.044 is below the threshold.

WEAKEST Flat dense black at the core arc's end

STRONGEST Streaked dry-brush greys in the right arc

Layering · ORDERED

Four tonal steps: pale outer arc, mid-grey arc, darker arc, black dry-brush core. The arcs overlap translucently, and their order reads clearly from the outside in.

WEAKEST Pale outermost arc barely separates from paper

STRONGEST Stepped translucent arcs nesting toward black core

Composition · WORKING

The spiral sweeps from top left down into the white void at bottom centre, so the empty paper is shaped. The bottom-left drips and pale runs are a weak, untidy corner.

WEAKEST Drip-strewn bottom-left zone

STRONGEST Spiral carrying eye into shaped white centre

Material and surface · FLAWED

The dry-brush grain is used well, but tide-edged runs and drops hang from the left grey arc in the bottom-left. They are clearly visible in the colour view. Paper creases cross the upper right.

WEAKEST Runs and drops below left grey wash

STRONGEST Dry-brush splitting in the black arc

FLAWS

6 distinct places, 1 major.

Each read must name every flaw and where it is, in a ninth of the sheet. Here the reads named flaws in 6 distinct places, 17 mentions in all across 5 reads; the number in each ninth is how many times a flaw was named there. Reads agreeing on a place strengthen the evidence for one flaw; they do not multiply it. A major flaw holds Material and surface at rung 1.

1 × OTHER“Blotchy mottled specks inside the pale upper-…”3 × OTHER“Paper creases and cracks crossing the grey ar…”2 × BLOOM“Spotty granulated blotches inside the left gr…”4 × OTHER“Stray ink spots right of the dark arc”5 × TIDE LINE, WATER STAIN · MAJOR“Runs and drips with hard edges hanging below …”2 × OTHER“Scattered blots and drops below the wash edge”WATER STAINBLOOMTIDE LINEOTHERMAJOR
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 1 principal ink mass traced (cyan), 8 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 16 edge segments, 19% crisp, 63% soft or bloomed, 19% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5H6H7H8
RULE 1Two tonal steps or fewer

Tonal depth held at rung 1.

4 steps: not applied
RULE 2A major flaw

Material held at rung 1. Mild waves in the unmounted paper are never a flaw.

5 major flaws: applied
RULE 3Any quality below 0.5

The rating cannot exceed 4.

lowest 1.0
RULE 4At least two valid reads

A read that breaks the reply format is discarded.

5 of 5 valid
THE ARITHMETIC

V23 rating 6.2.

Engine v23.8, 5 reads. Fixed arithmetic, the same for every painting; the constants were set on 24 randomly chosen paintings so the median sheet scores 5. The scale is relative to this archive, not to painting in general, and a difference of less than half a point between two paintings is noise.

MEAN RUNG2.08(2.4 + 2.0 + 3.0 + 2.0 + 1.0) ÷ 5
→
RAW5.161 + 2 × 2.08
→
RATING6.25 + 2.086 × (5.16 − 4.60)